hydromagnesite

noun

hy·​dro·​magnesite

: a mineral Mg₄(OH)₂(CO₃)₃.3H₂O consisting of a basic magnesium carbonate occurring in the form of small white crystals or chalky crusts

Word History

Etymology

German hydromagnesit, from hydr- + magnesit magnesite, from French magnésite

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!